/*
 *
 * Copyright 2024 tofuutils authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package pgpcheck

import "github.com/ProtonMail/gopenpgp/v2/crypto"

func Check(data []byte, dataSig []byte, dataPublicKey []byte) error {
	pgpSignature := crypto.NewPGPSignature(dataSig)
	publicKeyObj, err := crypto.NewKeyFromArmored(string(dataPublicKey))
	if err != nil {
		return err
	}

	signingKeyRing, err := crypto.NewKeyRing(publicKeyObj)
	if err != nil {
		return err
	}

	message := crypto.NewPlainMessage(data)

	return signingKeyRing.VerifyDetached(message, pgpSignature, crypto.GetUnixTime())
}
